Ventilating-screen.



A'. R. MOLLISON.

VENTILATING SCREEN.

APPLIOATION FILED MAY 7, 1914.

Patented Feb. 2, 1915.

INVENTOR A 7TOHNEYS WITNESSES THE NORRIS PETERS 60.. PHom-LJTHQ. wAsHlNGmN. D. C

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I ALLEN RAY MOLLISON OFENDERLIN, 'NORTH DAKOTA.

Gne of the principal objects of the invention is to provide an improved adjustable screen for use in sleeping rooms, hosp1tals,

Pullman cars, and other places where the admission of fresh air, without the presence of objectionable drafts, is desired.

Another ob ect of the invention is to provide a screen of the class described, including a pair of cloth or fine wire screen stretched frames, and means for securing the frames together whereby they may be adjusted relatively toeach other to fit various sized windows. V

A. further object of the invention is to provide a screen including frames covered with cloth, or fine wire mesh which will allow a steady ingress of fresh air to a room and will prevent the entrance of drafts.

Still another object is to provide a screen of the class described, having adjusting means between the frames, including a bolt carried by each frame and extending through a slot in the opposite frame and into a channeled strip positioned over the slot to prevent the passage of drafts therethrough, and to protect the bolt from the weather.

Any additional object of the invention is to provide an improved ventilating screen which will be simple, durable, efficient in operation and inexpensive to manufacture.

With these and other objects in view which will become apparent as the description proceeds, the invention resides in the construction, combination and arrangement of parts hereinafter more fully described and claimed and illustrated in the accompanying drawing, in which like characters of reference indicate like parts throughout the several figures, of which- Figure 1 represents a front elevational view of a screen constructed according to my invention. Fig. Qrepresents an enlarged vertical transverse sectional view taken on the plane indicated by the line 2-2 of Specification of Letters Patent.

R. MoLLrsoN,

Fig. 1.

Fig. 3

the cloth, and secured by suitable brads or tacks 10. The frames are arranged with their inner faces against each other, and in order to connect them together so that they may be adjusted each longitudinally of the other, the top rail of one frame and the bot tom rail of the other, are provided with elongated slots 11 extending substantially throughout the length of the frames, and in the slots are adapted to travel bolts 12 car ried by the frames, a bolt being carried by .each frame at the inner end of the rail op posite the rail provided with the slot as clearly indicated, said bolts being oppositely disposed and'eXtending loosely through the slots and being headed at their outer ends as at 13 to prevent lateral displacement of one frame relative to the other.

Secured to the outer face of each frame and disposed over the slot provided in the frame is a metallic strip 14 channeled throughout its length as at 15, the channel being of substantially the same curvature as the head of the bolt which rides in the slot, and said metal strips are adapted to prevent the passage of currents of air through the slots and also shield the bolts from the weather, so that the danger of their becoming rusted will be minimized, the strips may be secured as indicated by brads or other fastening means 16.

As indicated in Figs. 2 and 3 there necessarily occurs between the strips of cloth covering the screens, a considerable space indicated at 17., and when the screens are pulled out as indicated in Fig. lit would be possible for a current of air to enter the room between the sheets of cloth, were not provision made to block up this space, and in order to do this I provide one of the end bars 18 of one of the frames, with represents a fragmentary. horizontal sectional view taken on the plane indicated by the line 3-3 of Fig. 1, and

- Patented Feb. 2, 1915.

Application filed May 7, 1914. Serial 110,837,092.

-. terial 19 which is of a thickness sufficient v 7 tion of drafts between the cloth sheets as Will 'bG readily understood. The strip is of a length equal to the-distanceapart'of' l 1 at'its ends it engages the inner edges of the longitudinal bars of the oppositeframe 'and 'bl to occupy thedistance betweenthe .end rail and the opposite sheet of'cloth, so 'th'atthe is in contact-athroughoutwits:

filler strip length With the cloth, and prevents thecreathe longitudinal bars of the frame, sothat hence, the strip aids the bolts in; guiding I the frames as they are adjusted.

' in the Window/ casings of sleeping apartments or other buildings Where a'supply'of fresh to myinvention are adapted'to bepositioned air is Wanted, and since the-screens arcad- Although I have described the preferred embodiment of my invention; I mayydesire I to makesuch' changes in the c'on'structi'on,

combination and arrangement of P parts;

-the invention and the scope'of thea pendc casings, and by their construction it is-evi dent that While they allow a supply offresh air to percolate through the cl'oth='cove'ri-ngs" they absolutely 1 prevent the entrance l of 5 drafts, and they also prevent the'entrance of I -"entr'ance'of drafts through the slots; screen- I ing sheets=secured to the frames gand means for-" preventing {entrance ;of. drafts through 1 ram or snow into the apartment.

'thereof asdo not depart from the spirit of 1 ed claims.

of the frame,

adapted toprevent entrance of drafts there- 4. a throug'h' and adapted to 'protectthejbolts; Finely Woven Wire cloth or other filter? "sheets secured oversaidiframes, ing fabric may be used With the frame, and" i Will serve the same purposes as the muslin.

- or similar cloth. 3

Ventilating screens constructed according KI claimi i 1 I 1., A ventilating screen comprising appair p of frames adjustable with relation to eachother, each of the fr'amesjprovided With an frame adjacent one corner thereofan'd exelongated slot extending substantially the T length of one of the longitudinal members 7 a'single bolt carried by -each tending thr'ough the adjacent slot'in theopposite frame, said slots occurring in theop posite longitudinal members of. the assemedfjs'c'reem covering strips for the slots and jadapted to-allowthepercolation of' air 1 there:

through, and means for preventing entrance of drafts throughthesheets.

2. ;A' ventilating screen comprising a; pair of frames adjustable with -i-e1ation to: each other, each frame having a 'slotextending approximately the entire length of. one longitudinalmember thereof and having abolt -usta'ble they Will fit various sized '1 Window.

carried by the other longitudinalmember atone corner ofjthe'frame, said frame beslot ofthe"opposite frame, means for covering the-slots to protect the bolts andprevent "ALLEN RAY MOLEISON,

Witriessespfi "GEO; E." HERZOG;

o'mmis's ioner of I Patents 

